winedos: Add call frame annotations in x86 assembly code.

dlls/winedos/int31.c

@@ -312,9 +312,14 @@ void DPMI_CallRMCB32(RMCB *rmcb, UINT16 ss, DWORD esp, UINT16*es, DWORD*edi)
 ;
 __ASM_GLOBAL_FUNC(DPMI_CallRMCB32,
     "pushl %ebp\n\t"
+    __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
+    __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
     "movl %esp,%ebp\n\t"
+    __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
     "pushl %edi\n\t"
+    __ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
     "pushl %esi\n\t"
+    __ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
     "movl 0x8(%ebp),%eax\n\t"
     "movl 0x10(%ebp),%esi\n\t"
     "movl 0xc(%ebp),%edx\n\t"
@@ -339,8 +344,12 @@ __ASM_GLOBAL_FUNC(DPMI_CallRMCB32,
     "movl 0x18(%ebp),%edx\n\t"
     "movl %edi,(%edx)\n\t"
     "popl %esi\n\t"
+    __ASM_CFI(".cfi_same_value %esi\n\t")
     "popl %edi\n\t"
+    __ASM_CFI(".cfi_same_value %edi\n\t")
     "leave\n\t"
+    __ASM_CFI(".cfi_def_cfa %esp,4\n\t")
+    __ASM_CFI(".cfi_same_value %ebp\n\t")
     "ret")
 #endif